Liquid fuel burner



y 3, 1956 H. c. KEMPER LIQUID FUEL BURNER Filed 00%.. 8, 1954 m r a m mH 772mm w 0m United States Patent() LIQUID FUEL BURNER Homer C. Kemper,Kansas City, Mo.

Application October 8, 1954, Serial No. 461,196

2 Claims. (Cl. 158-53) The present invention relates to a liquid fuelburner and more particularly to a burner designed for use with liquidpetroleum gases, and one having a chamber for converting the liquid to agas by vaporizing.

The principal object of the present invention is to provide a liquidfuel burner having a chamber into which liquid fuel is introduced forvaporizing and which chamber is not in contact on any of its Walls withthe combustion tube of the burner.

Another object of the present invention is to provide a liquid fuelburner which will not carbon up within its combustion tube for thereason that no part of the combustion tube comes in contact with thechilling liquid fuel.

A further object of the present invention is to provide a liquid fuelburner having a housing in which a partition separates the housing intoan upper chamber and a lower chamber which are in communication witheach other, the lower chamber of which is used to convert liquidpetroleum gas to a gaseous fuel for pre-heating in the upper chamberbefore introduction to the combustion tube.

These and other objects and advantages of the present invention will befully apparent from the following description when taken in conjunctionwith the annexed drawings, in which:

Figure 1 is a side view in elevation partially broken away, of thepresent invention;

Figure 2 is an end view in cross section on line 2-2 of Figure 1;

Figure 3 is a side view in cross section on line 3--3 of Figure 2; and

Figure 4 is a view in perspective of the partition used in the housingof the present invention.

Referring in greater detail to the drawing in which like numeralsindicate like parts throughout the several views, the invention is seento consist of a horizontally disposed tubular housing having end walls11 and 12.

A horizontally disposed partition 13, having a semicylindrical section14, is positioned within the housing 10 and is connected along its sidesand ends to the side walls and end walls of the housing in liquid tightcondition.

The partition 13 is formed with a plurality of ports 15 along each sideof the flat shelf sections 16.

A combustion tube 17 formed with an open inlet end 18 and a flared openoutlet end 19 is positioned axially within the housing 10 and arrangedconcentrically with respect to the outer wall of the housing and spacedfrom the partition 13.

A conduit 20 connects the space above the partition 13 which forms anupper chamber with the nozzle plate 21 which is threadedly secured tothe end of the conduit 20 and is provided with an orifice 22 for thedelivery of fuel to the combustion tube 17.

Another conduit 23 connects the space below the partition 13 which formsa lower chamber, to a source of liquid petroleum gas under pressure.

A coupling 24 is shown connected to the conduit 23 and is provided witha plate 25 having a conical restriction orifice 26 for the purpose oflimiting the flow of the liquid petroleum gas to the lower chamber.

It has been found that in the delivery of liquid petroleum gas to such achamber as is formed by the partition which divides the housing 10, muchheat is taken up and a chilling eifect is noted to the walls of thatchamber. If the walls of the combustion tube are in direct contact withthe walls of the chamber in which this liquid petroleum fuel isconverted to gas, a serious amount of carbon is formed on the innerWalls of the combustion tube, preventing complete combustion andproducing a smoky flame.

It will be seen, therefore, that the advantage of the present inventionlies in the fact that the partition 13 forms the upper wall of the lowerchamber and receives radiated heat from the combustion tube 17 withouteffecting chilling of that tube. The resultant flame is entirelysmokeless, and the burner, after it is preheated and ignited, can beoperated for long periods of time without further attention.

While a single embodiment of the present invention has been hereillustrated and described, it is believed that other embodiments may bemade and practiced within the scope of the appended claims withoutdeparting from the spirit of the invention.

What is claimed is:

1. A liquid fuel burner comprising a horizontally disposed tubularhousing having end walls, a horizontally disposed partition having asemi-cylindrical section disposed concentrically within said housingdividing the space within said housing into an upper chamber and a lowerchamber, a combustion tube having an open inlet end and an open outletend axially positioned within said upper chamber in spaced relation tosaid semi-cylindrical section and supported in said end walls and havingthe inlet end exteriorly of and spaced from one of said end walls andhaving the outlet end exteriorly of and spaced from the other of saidend walls, said partition being formed with ports connecting incommunication said upper and lower chambers, conduit means for deliveryof liquid fuel to said lower chamber, and conduit means having one endin communication with said upper chamber and having the other endadjacent to and in alignment with respect to the inlet end of saidcombustion tube for delivery of gaseous fuel as vaporized in said lowerchamber from said upper chamber to the inlet end of said combustiontube.

2. A liquid fuel burner comprising a. horizontally disposed tubularhousing having end walls, a horizontally disposed partition having asemi-cylindrical section disposed concentrically within said housingdividing the space within said housing into an upper chamber and a lowerchamber, a combustion tube having an open inlet end and an open outletend axially positioned in said upper chamber in spaced relation to saidsemi-cylindrical section and supported in said end walls and having theinlet end exteriorly of and spaced from one of said end walls and havingthe outlet end flared and exteriorly of and spaced from the other ofsaid end walls, said partition being formed with ports connecting incommunication said upper and lower chambers, conduit means for deliveryof liquid fuel to said lower chamber, and conduit means having one endin communication with said upper chamber and having on the other end anozzle positioned adjacent to and in axial alignment with respect to theinlet end of said combustion tube for delivery of gaseous fuel asvaporized in said lower chamber from said upper chamber to the inlet endof said combustion 5 tube.

References Cited in the file of this patent UNITED STATES PATENTS 102,585,088 Burch Feb. 12, 1952 2,693,229 Fagan Nov. 2, 1954

